include/acpi/acpi_bus.h

   1 /*
   2  *  acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
   3  *
   4  *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
   5  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   6  *
   7  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or (at
  12  *  your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful, but
  15  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  *  General Public License for more details.
  18  *
  19  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  20  */
  21
  22 #ifndef __ACPI_BUS_H__
  23 #define __ACPI_BUS_H__
  24
  25 #include <linux/device.h>
  26 #include <linux/property.h>
  27
  28 /* TBD: Make dynamic */
  29 #define ACPI_MAX_HANDLES        10
  30 struct acpi_handle_list {
  31         u32 count;
  32         acpi_handle handles[ACPI_MAX_HANDLES];
  33 };
  34
  35 /* acpi_utils.h */
  36 acpi_status
  37 acpi_extract_package(union acpi_object *package,
  38                      struct acpi_buffer *format, struct acpi_buffer *buffer);
  39 acpi_status
  40 acpi_evaluate_integer(acpi_handle handle,
  41                       acpi_string pathname,
  42                       struct acpi_object_list *arguments, unsigned long long *data);
  43 acpi_status
  44 acpi_evaluate_reference(acpi_handle handle,
  45                         acpi_string pathname,
  46                         struct acpi_object_list *arguments,
  47                         struct acpi_handle_list *list);
  48 acpi_status
  49 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
  50                   struct acpi_buffer *status_buf);
  51
  52 acpi_status
  53 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
  54
  55 bool acpi_has_method(acpi_handle handle, char *name);
  56 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
  57                                        u64 arg);
  58 acpi_status acpi_evaluate_ej0(acpi_handle handle);
  59 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
  60 bool acpi_ata_match(acpi_handle handle);
  61 bool acpi_bay_match(acpi_handle handle);
  62 bool acpi_dock_match(acpi_handle handle);
  63
  64 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
  65 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
  66                         u64 rev, u64 func, union acpi_object *argv4);
  67
  68 static inline union acpi_object *
  69 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
  70                         u64 func, union acpi_object *argv4,
  71                         acpi_object_type type)
  72 {
  73         union acpi_object *obj;
  74
  75         obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
  76         if (obj && obj->type != type) {
  77                 ACPI_FREE(obj);
  78                 obj = NULL;
  79         }
  80
  81         return obj;
  82 }
  83
  84 #define ACPI_INIT_DSM_ARGV4(cnt, eles)                  \
  85         {                                               \
  86           .package.type = ACPI_TYPE_PACKAGE,            \
  87           .package.count = (cnt),                       \
  88           .package.elements = (eles)                    \
  89         }
  90
  91 bool acpi_dev_found(const char *hid);
  92 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
  93
  94 #ifdef CONFIG_ACPI
  95
  96 #include <linux/proc_fs.h>
  97
  98 #define ACPI_BUS_FILE_ROOT      "acpi"
  99 extern struct proc_dir_entry *acpi_root_dir;
 100
 101 enum acpi_bus_device_type {
 102         ACPI_BUS_TYPE_DEVICE = 0,
 103         ACPI_BUS_TYPE_POWER,
 104         ACPI_BUS_TYPE_PROCESSOR,
 105         ACPI_BUS_TYPE_THERMAL,
 106         ACPI_BUS_TYPE_POWER_BUTTON,
 107         ACPI_BUS_TYPE_SLEEP_BUTTON,
 108         ACPI_BUS_TYPE_ECDT_EC,
 109         ACPI_BUS_DEVICE_TYPE_COUNT
 110 };
 111
 112 struct acpi_driver;
 113 struct acpi_device;
 114
 115 /*
 116  * ACPI Scan Handler
 117  * -----------------
 118  */
 119
 120 struct acpi_hotplug_profile {
 121         struct kobject kobj;
 122         int (*scan_dependent)(struct acpi_device *adev);
 123         void (*notify_online)(struct acpi_device *adev);
 124         bool enabled:1;
 125         bool demand_offline:1;
 126 };
 127
 128 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
 129                                                 struct kobject *kobj)
 130 {
 131         return container_of(kobj, struct acpi_hotplug_profile, kobj);
 132 }
 133
 134 struct acpi_scan_handler {
 135         const struct acpi_device_id *ids;
 136         struct list_head list_node;
 137         bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
 138         int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
 139         void (*detach)(struct acpi_device *dev);
 140         void (*bind)(struct device *phys_dev);
 141         void (*unbind)(struct device *phys_dev);
 142         struct acpi_hotplug_profile hotplug;
 143 };
 144
 145 /*
 146  * ACPI Hotplug Context
 147  * --------------------
 148  */
 149
 150 struct acpi_hotplug_context {
 151         struct acpi_device *self;
 152         int (*notify)(struct acpi_device *, u32);
 153         void (*uevent)(struct acpi_device *, u32);
 154         void (*fixup)(struct acpi_device *);
 155 };
 156
 157 /*
 158  * ACPI Driver
 159  * -----------
 160  */
 161
 162 typedef int (*acpi_op_add) (struct acpi_device * device);
 163 typedef int (*acpi_op_remove) (struct acpi_device * device);
 164 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
 165
 166 struct acpi_device_ops {
 167         acpi_op_add add;
 168         acpi_op_remove remove;
 169         acpi_op_notify notify;
 170 };
 171
 172 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS   0x1     /* system AND device events */
 173
 174 struct acpi_driver {
 175         char name[80];
 176         char class[80];
 177         const struct acpi_device_id *ids; /* Supported Hardware IDs */
 178         unsigned int flags;
 179         struct acpi_device_ops ops;
 180         struct device_driver drv;
 181         struct module *owner;
 182 };
 183
 184 /*
 185  * ACPI Device
 186  * -----------
 187  */
 188
 189 /* Status (_STA) */
 190
 191 struct acpi_device_status {
 192         u32 present:1;
 193         u32 enabled:1;
 194         u32 show_in_ui:1;
 195         u32 functional:1;
 196         u32 battery_present:1;
 197         u32 reserved:27;
 198 };
 199
 200 /* Flags */
 201
 202 struct acpi_device_flags {
 203         u32 dynamic_status:1;
 204         u32 removable:1;
 205         u32 ejectable:1;
 206         u32 power_manageable:1;
 207         u32 match_driver:1;
 208         u32 initialized:1;
 209         u32 visited:1;
 210         u32 hotplug_notify:1;
 211         u32 is_dock_station:1;
 212         u32 of_compatible_ok:1;
 213         u32 coherent_dma:1;
 214         u32 cca_seen:1;
 215         u32 enumeration_by_parent:1;
 216         u32 reserved:19;
 217 };
 218
 219 /* File System */
 220
 221 struct acpi_device_dir {
 222         struct proc_dir_entry *entry;
 223 };
 224
 225 #define acpi_device_dir(d)      ((d)->dir.entry)
 226
 227 /* Plug and Play */
 228
 229 typedef char acpi_bus_id[8];
 230 typedef unsigned long acpi_bus_address;
 231 typedef char acpi_device_name[40];
 232 typedef char acpi_device_class[20];
 233
 234 struct acpi_hardware_id {
 235         struct list_head list;
 236         const char *id;
 237 };
 238
 239 struct acpi_pnp_type {
 240         u32 hardware_id:1;
 241         u32 bus_address:1;
 242         u32 platform_id:1;
 243         u32 reserved:29;
 244 };
 245
 246 struct acpi_device_pnp {
 247         acpi_bus_id bus_id;             /* Object name */
 248         struct acpi_pnp_type type;      /* ID type */
 249         acpi_bus_address bus_address;   /* _ADR */
 250         char *unique_id;                /* _UID */
 251         struct list_head ids;           /* _HID and _CIDs */
 252         acpi_device_name device_name;   /* Driver-determined */
 253         acpi_device_class device_class; /*        "          */
 254         union acpi_object *str_obj;     /* unicode string for _STR method */
 255 };
 256
 257 #define acpi_device_bid(d)      ((d)->pnp.bus_id)
 258 #define acpi_device_adr(d)      ((d)->pnp.bus_address)
 259 const char *acpi_device_hid(struct acpi_device *device);
 260 #define acpi_device_uid(d)      ((d)->pnp.unique_id)
 261 #define acpi_device_name(d)     ((d)->pnp.device_name)
 262 #define acpi_device_class(d)    ((d)->pnp.device_class)
 263
 264 /* Power Management */
 265
 266 struct acpi_device_power_flags {
 267         u32 explicit_get:1;     /* _PSC present? */
 268         u32 power_resources:1;  /* Power resources */
 269         u32 inrush_current:1;   /* Serialize Dx->D0 */
 270         u32 power_removed:1;    /* Optimize Dx->D0 */
 271         u32 ignore_parent:1;    /* Power is independent of parent power state */
 272         u32 dsw_present:1;      /* _DSW present? */
 273         u32 reserved:26;
 274 };
 275
 276 struct acpi_device_power_state {
 277         struct {
 278                 u8 valid:1;
 279                 u8 explicit_set:1;      /* _PSx present? */
 280                 u8 reserved:6;
 281         } flags;
 282         int power;              /* % Power (compared to D0) */
 283         int latency;            /* Dx->D0 time (microseconds) */
 284         struct list_head resources;     /* Power resources referenced */
 285 };
 286
 287 struct acpi_device_power {
 288         int state;              /* Current state */
 289         struct acpi_device_power_flags flags;
 290         struct acpi_device_power_state states[ACPI_D_STATE_COUNT];      /* Power states (D0-D3Cold) */
 291 };
 292
 293 /* Performance Management */
 294
 295 struct acpi_device_perf_flags {
 296         u8 reserved:8;
 297 };
 298
 299 struct acpi_device_perf_state {
 300         struct {
 301                 u8 valid:1;
 302                 u8 reserved:7;
 303         } flags;
 304         u8 power;               /* % Power (compared to P0) */
 305         u8 performance;         /* % Performance (    "   ) */
 306         int latency;            /* Px->P0 time (microseconds) */
 307 };
 308
 309 struct acpi_device_perf {
 310         int state;
 311         struct acpi_device_perf_flags flags;
 312         int state_count;
 313         struct acpi_device_perf_state *states;
 314 };
 315
 316 /* Wakeup Management */
 317 struct acpi_device_wakeup_flags {
 318         u8 valid:1;             /* Can successfully enable wakeup? */
 319         u8 notifier_present:1;  /* Wake-up notify handler has been installed */
 320 };
 321
 322 struct acpi_device_wakeup_context {
 323         void (*func)(struct acpi_device_wakeup_context *context);
 324         struct device *dev;
 325 };
 326
 327 struct acpi_device_wakeup {
 328         acpi_handle gpe_device;
 329         u64 gpe_number;
 330         u64 sleep_state;
 331         struct list_head resources;
 332         struct acpi_device_wakeup_flags flags;
 333         struct acpi_device_wakeup_context context;
 334         struct wakeup_source *ws;
 335         int prepare_count;
 336         int enable_count;
 337 };
 338
 339 struct acpi_device_physical_node {
 340         unsigned int node_id;
 341         struct list_head node;
 342         struct device *dev;
 343         bool put_online:1;
 344 };
 345
 346 struct acpi_device_properties {
 347         const guid_t *guid;
 348         const union acpi_object *properties;
 349         struct list_head list;
 350 };
 351
 352 /* ACPI Device Specific Data (_DSD) */
 353 struct acpi_device_data {
 354         const union acpi_object *pointer;
 355         struct list_head properties;
 356         const union acpi_object *of_compatible;
 357         struct list_head subnodes;
 358 };
 359
 360 struct acpi_gpio_mapping;
 361
 362 /* Device */
 363 struct acpi_device {
 364         int device_type;
 365         acpi_handle handle;             /* no handle for fixed hardware */
 366         struct fwnode_handle fwnode;
 367         struct acpi_device *parent;
 368         struct list_head children;
 369         struct list_head node;
 370         struct list_head wakeup_list;
 371         struct list_head del_list;
 372         struct acpi_device_status status;
 373         struct acpi_device_flags flags;
 374         struct acpi_device_pnp pnp;
 375         struct acpi_device_power power;
 376         struct acpi_device_wakeup wakeup;
 377         struct acpi_device_perf performance;
 378         struct acpi_device_dir dir;
 379         struct acpi_device_data data;
 380         struct acpi_scan_handler *handler;
 381         struct acpi_hotplug_context *hp;
 382         struct acpi_driver *driver;
 383         const struct acpi_gpio_mapping *driver_gpios;
 384         void *driver_data;
 385         struct device dev;
 386         unsigned int physical_node_count;
 387         unsigned int dep_unmet;
 388         struct list_head physical_node_list;
 389         struct mutex physical_node_lock;
 390         void (*remove)(struct acpi_device *);
 391 };
 392
 393 /* Non-device subnode */
 394 struct acpi_data_node {
 395         const char *name;
 396         acpi_handle handle;
 397         struct fwnode_handle fwnode;
 398         struct fwnode_handle *parent;
 399         struct acpi_device_data data;
 400         struct list_head sibling;
 401         struct kobject kobj;
 402         struct completion kobj_done;
 403 };
 404
 405 extern const struct fwnode_operations acpi_device_fwnode_ops;
 406 extern const struct fwnode_operations acpi_data_fwnode_ops;
 407 extern const struct fwnode_operations acpi_static_fwnode_ops;
 408
 409 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
 410 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
 411
 412 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
 413 {
 414         return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
 415 }
 416
 417 #define to_acpi_device_node(__fwnode)                                   \
 418         ({                                                              \
 419                 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
 420                                                                         \
 421                 is_acpi_device_node(__to_acpi_device_node_fwnode) ?     \
 422                         container_of(__to_acpi_device_node_fwnode,      \
 423                                      struct acpi_device, fwnode) :      \
 424                         NULL;                                           \
 425         })
 426
 427 #define to_acpi_data_node(__fwnode)                                     \
 428         ({                                                              \
 429                 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
 430                                                                         \
 431                 is_acpi_data_node(__to_acpi_data_node_fwnode) ?         \
 432                         container_of(__to_acpi_data_node_fwnode,        \
 433                                      struct acpi_data_node, fwnode) :   \
 434                         NULL;                                           \
 435         })
 436
 437 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
 438 {
 439         return !IS_ERR_OR_NULL(fwnode) &&
 440                 fwnode->ops == &acpi_static_fwnode_ops;
 441 }
 442
 443 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
 444                                         const char *name)
 445 {
 446         return is_acpi_data_node(fwnode) ?
 447                 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
 448 }
 449
 450 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
 451 {
 452         return &adev->fwnode;
 453 }
 454
 455 static inline void *acpi_driver_data(struct acpi_device *d)
 456 {
 457         return d->driver_data;
 458 }
 459
 460 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
 461 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
 462
 463 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
 464 {
 465         *((u32 *)&adev->status) = sta;
 466 }
 467
 468 static inline void acpi_set_hp_context(struct acpi_device *adev,
 469                                        struct acpi_hotplug_context *hp)
 470 {
 471         hp->self = adev;
 472         adev->hp = hp;
 473 }
 474
 475 void acpi_initialize_hp_context(struct acpi_device *adev,
 476                                 struct acpi_hotplug_context *hp,
 477                                 int (*notify)(struct acpi_device *, u32),
 478                                 void (*uevent)(struct acpi_device *, u32));
 479
 480 /* acpi_device.dev.bus == &acpi_bus_type */
 481 extern struct bus_type acpi_bus_type;
 482
 483 /*
 484  * Events
 485  * ------
 486  */
 487
 488 struct acpi_bus_event {
 489         struct list_head node;
 490         acpi_device_class device_class;
 491         acpi_bus_id bus_id;
 492         u32 type;
 493         u32 data;
 494 };
 495
 496 extern struct kobject *acpi_kobj;
 497 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
 498 void acpi_bus_private_data_handler(acpi_handle, void *);
 499 int acpi_bus_get_private_data(acpi_handle, void **);
 500 int acpi_bus_attach_private_data(acpi_handle, void *);
 501 void acpi_bus_detach_private_data(acpi_handle);
 502 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
 503 extern int register_acpi_notifier(struct notifier_block *);
 504 extern int unregister_acpi_notifier(struct notifier_block *);
 505
 506 /*
 507  * External Functions
 508  */
 509
 510 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
 511 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
 512 void acpi_bus_put_acpi_device(struct acpi_device *adev);
 513 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
 514                                        unsigned long long *sta);
 515 int acpi_bus_get_status(struct acpi_device *device);
 516
 517 int acpi_bus_set_power(acpi_handle handle, int state);
 518 const char *acpi_power_state_string(int state);
 519 int acpi_device_get_power(struct acpi_device *device, int *state);
 520 int acpi_device_set_power(struct acpi_device *device, int state);
 521 int acpi_bus_init_power(struct acpi_device *device);
 522 int acpi_device_fix_up_power(struct acpi_device *device);
 523 int acpi_bus_update_power(acpi_handle handle, int *state_p);
 524 int acpi_device_update_power(struct acpi_device *device, int *state_p);
 525 bool acpi_bus_power_manageable(acpi_handle handle);
 526
 527 #ifdef CONFIG_PM
 528 bool acpi_bus_can_wakeup(acpi_handle handle);
 529 #else
 530 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
 531 #endif
 532
 533 void acpi_scan_lock_acquire(void);
 534 void acpi_scan_lock_release(void);
 535 void acpi_lock_hp_context(void);
 536 void acpi_unlock_hp_context(void);
 537 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
 538 int acpi_bus_register_driver(struct acpi_driver *driver);
 539 void acpi_bus_unregister_driver(struct acpi_driver *driver);
 540 int acpi_bus_scan(acpi_handle handle);
 541 void acpi_bus_trim(struct acpi_device *start);
 542 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
 543 int acpi_match_device_ids(struct acpi_device *device,
 544                           const struct acpi_device_id *ids);
 545 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
 546                        char *modalias, size_t len);
 547 int acpi_create_dir(struct acpi_device *);
 548 void acpi_remove_dir(struct acpi_device *);
 549
 550 static inline bool acpi_device_enumerated(struct acpi_device *adev)
 551 {
 552         return adev && adev->flags.initialized && adev->flags.visited;
 553 }
 554
 555 /**
 556  * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
 557  * @__acpi_driver: acpi_driver struct
 558  *
 559  * Helper macro for ACPI drivers which do not do anything special in module
 560  * init/exit. This eliminates a lot of boilerplate. Each module may only
 561  * use this macro once, and calling it replaces module_init() and module_exit()
 562  */
 563 #define module_acpi_driver(__acpi_driver) \
 564         module_driver(__acpi_driver, acpi_bus_register_driver, \
 565                       acpi_bus_unregister_driver)
 566
 567 /*
 568  * Bind physical devices with ACPI devices
 569  */
 570 struct acpi_bus_type {
 571         struct list_head list;
 572         const char *name;
 573         bool (*match)(struct device *dev);
 574         struct acpi_device * (*find_companion)(struct device *);
 575         void (*setup)(struct device *);
 576         void (*cleanup)(struct device *);
 577 };
 578 int register_acpi_bus_type(struct acpi_bus_type *);
 579 int unregister_acpi_bus_type(struct acpi_bus_type *);
 580 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
 581 int acpi_unbind_one(struct device *dev);
 582
 583 struct acpi_pci_root {
 584         struct acpi_device * device;
 585         struct pci_bus *bus;
 586         u16 segment;
 587         struct resource secondary;      /* downstream bus range */
 588
 589         u32 osc_support_set;    /* _OSC state of support bits */
 590         u32 osc_control_set;    /* _OSC state of control bits */
 591         phys_addr_t mcfg_addr;
 592 };
 593
 594 /* helper */
 595
 596 bool acpi_dma_supported(struct acpi_device *adev);
 597 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
 598 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
 599                        u64 *size);
 600 int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr);
 601 void acpi_dma_deconfigure(struct device *dev);
 602
 603 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
 604                                            u64 address, bool check_children);
 605 int acpi_is_root_bridge(acpi_handle);
 606 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
 607
 608 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
 609 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
 610
 611 #ifdef CONFIG_X86
 612 bool acpi_device_always_present(struct acpi_device *adev);
 613 #else
 614 static inline bool acpi_device_always_present(struct acpi_device *adev)
 615 {
 616         return false;
 617 }
 618 #endif
 619
 620 #ifdef CONFIG_PM
 621 void acpi_pm_wakeup_event(struct device *dev);
 622 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
 623                         void (*func)(struct acpi_device_wakeup_context *context));
 624 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
 625 bool acpi_pm_device_can_wakeup(struct device *dev);
 626 int acpi_pm_device_sleep_state(struct device *, int *, int);
 627 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
 628 int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable);
 629 #else
 630 static inline void acpi_pm_wakeup_event(struct device *dev)
 631 {
 632 }
 633 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
 634                                                struct device *dev,
 635                                                void (*func)(struct acpi_device_wakeup_context *context))
 636 {
 637         return AE_SUPPORT;
 638 }
 639 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
 640 {
 641         return AE_SUPPORT;
 642 }
 643 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
 644 {
 645         return false;
 646 }
 647 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
 648 {
 649         if (p)
 650                 *p = ACPI_STATE_D0;
 651
 652         return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
 653                 m : ACPI_STATE_D0;
 654 }
 655 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
 656 {
 657         return -ENODEV;
 658 }
 659 static inline int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable)
 660 {
 661         return -ENODEV;
 662 }
 663 #endif
 664
 665 #ifdef CONFIG_ACPI_SLEEP
 666 u32 acpi_target_system_state(void);
 667 #else
 668 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
 669 #endif
 670
 671 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
 672 {
 673         return adev->flags.power_manageable;
 674 }
 675
 676 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
 677 {
 678         return adev->wakeup.flags.valid;
 679 }
 680
 681 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
 682 {
 683         return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
 684                 ((acpi_gbl_FADT.header.revision < 6) &&
 685                 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
 686 }
 687
 688 #else   /* CONFIG_ACPI */
 689
 690 static inline int register_acpi_bus_type(void *bus) { return 0; }
 691 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
 692
 693 #endif                          /* CONFIG_ACPI */
 694
 695 #endif /*__ACPI_BUS_H__*/